Home / 21,909.04-30,232.76-12,475.76

Finding the Fourth Proportional to 21,909.04, 30,232.76 and 12,475.76

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Solution

The fourth proportional to 21,909.04, 30,232.76 and 12,475.76 is: 17,215.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,909.04 : 30,232.76 = 12,475.76 : x
  2. Step 2: Convert to fraction form
    21,909.04/30,232.76 = 12,475.76/x
  3. Step 3: Cross multiply
    21,909.04x = 30,232.76 × 12,475.76
  4. Step 4: Simplify right side
    21,909.04x = 377,176,657.90
  5. Step 5: Solve for x
    x = 377,176,657.90/21,909.04
  6. Step 6: Final answer
    x = 17,215.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.